“Solar flares or geomagnetic storms cause magnetic field fluctuations, which lead dogs to take a more random approach.”

Yes and…Do they pick up on seismic fluctuations, and could this somehow be used to predict earthquakes?

“On January the 6th the magnetic field was very stable, which means that the dogs were very well orientated during pooping. On January the 2nd the magnetic field was more restless, and the dogs were pooping in a random fashion.”

Yes and…Does a dog in a high-field MRI scanner poop along the axis of the bore because he wants to, or because he has to?